biggs
off to a rocking start
Member since March 2023
Posts: 8
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Post by biggs on Mar 19, 2023 10:40:33 GMT -5
Hello, I’m rebuilding my old 1970’s highland park 6tsc 6” ” combo unit. It hasn’t been used in 20 years! I need help in taking the arbor apart to replace the old stone wheels with new ones, probably diamond ones. An old manual page or diagram would be helpful before I tear into it. Thanks, Biggs
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Post by manofglass on Mar 19, 2023 13:18:22 GMT -5
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biggs
off to a rocking start
Member since March 2023
Posts: 8
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Post by biggs on Mar 19, 2023 15:29:12 GMT -5
Hi, and thanks for the reply. HP site has nothing for units that old. I emailed the support person and got an fast answer saying that they have no parts or manual for and no longer support those in anyway. Surprising. I’ll just start with the right most collar and work my way to the left. Biggs
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Post by Rockoonz on Mar 20, 2023 0:51:21 GMT -5
Same as this? www.worthpoint.com/worthopedia/highland-park-6tsc-lapidary-1896693049Have you already opened it and pulled the shaft with bearings out? If it is the same unit I would 1) Remove drive belt from motor pulley, save to match size for new ones. 2) Remove saw top and grinder/sander spray shield 3) Remove saw blade. It is reverse threaded so righty loosey, or just turn it the same direction as the blade turns. Have PB Blaster or AeroKroil on hand. 4) Loosen nut on right end of shaft, normal thread direction 5) Remove the bearing caps and bearings from the unit base, then start removing wheels and bearings starting at the right, may require much penetrating oil and maybe heat. There may be set screws requiring allen wrenches on the bearings, and another nut on the shaft after the first bearing. When all wheels are off with flanges and spacers there may be a removable collar at the left of the wheels, if at all possible just leave it there. Once everything is off and most or all rust removed, reassembly is opposite, except if you are converting from old style wheels to diamond. if you're doing that you will need more spacers. Actual truly flat spacer washers for your shaft diameter will work, regular hardware store ones won't. Cigarbox rocks may have them, and speaking of them, heres a little more from their site. cigarboxrock.com/vintage-lapidary-combination-units/
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biggs
off to a rocking start
Member since March 2023
Posts: 8
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Post by biggs on Mar 20, 2023 19:40:33 GMT -5
Thanks, yes, that’s the one. I’m working on it but have to borrow a gear puller from Autozone to get the right bearing off. If the bearing feels good after removal I’ll reuse it, otherwise where do you suggest I look for a good replacement? Maybe Fastenall or Grainger? Thanks, again, Biggs
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Post by Rockoonz on Mar 20, 2023 22:06:18 GMT -5
Thanks, yes, that’s the one. I’m working on it but have to borrow a gear puller from Autozone to get the right bearing off. If the bearing feels good after removal I’ll reuse it, otherwise where do you suggest I look for a good replacement? Maybe Fastenall or Grainger? Thanks, again, Biggs If you need a replacement start by finding the part number on your old one, usually etched into the edges of the inner race, but sometimes the outer. I usually start with a search of the part number, try to find original Sealmaster or Fafnir bearings that HP and FranTom used, ebay can be a good source. Price makes Grainger my last resort.
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biggs
off to a rocking start
Member since March 2023
Posts: 8
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Post by biggs on Mar 25, 2023 17:21:56 GMT -5
Whew! it took some doing, but I got the shaft out of the unit and all the wheels, bearings and flanges off. The shaft dia. is 3/4" for the expandable drum and bearings, then it bumps up to 1" for the stone wheels (to be replaced with diamond wheels), then bumps up again to 1 1/4 " for the spacer that is between the flanges of the grinding wheels. It seems like there is enough room on the 1 1/4" spacer ( 3 1/2 ") for another 1 or 1 1/2" wheel of I use suitable spacers and flanges. The question is: can I drill out the 1" hole of most diamond wheels to fit 1 1/4" dia. spacer? The spacer and the threaded part it is over seem to be either machines and part of the main shaft or frozen on with corrosion. It won't budge. I should be easy to drill out a wheel hole but I thought I'd see what you guys thought.
The great folks at Cigarboxrock.com have or will make flanges for me, thanks for the link.
Thanks, Biggs.
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Post by hummingbirdstones on Mar 25, 2023 19:13:04 GMT -5
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biggs
off to a rocking start
Member since March 2023
Posts: 8
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Post by biggs on Mar 26, 2023 9:00:14 GMT -5
Whew! it took some doing, but I got the shaft out of the unit and all the wheels, bearings and flanges off. The shaft dia. is 3/4" for the expandable drum and bearings, then it bumps up to 1" for the stone wheels (to be replaced with diamond wheels), then bumps up again to 1 1/4 " for the spacer that is between the flanges of the grinding wheels. It seems like there is enough room on the 1 1/4" spacer ( 3 1/2 ") for another 1 or 1 1/2" wheel of I use suitable spacers and flanges. The question is: can I drill out the 1" hole of most diamond wheels to fit 1 1/4" dia. spacer? The spacer and the threaded part it is over seem to be either machines and part of the main shaft or frozen on with corrosion. It won't budge. I should be easy to drill out a wheel hole but I thought I'd see what you guys thought.
The great folks at Cigarboxrock.com have or will make flanges for me, thanks for the link.
Thanks, Biggs.
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semitten
off to a rocking start
Member since September 2023
Posts: 1
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Post by semitten on Sept 11, 2023 15:00:16 GMT -5
I sent you a PM, wondering how the project is coming ? ?
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Post by Rockoonz on Sept 11, 2023 21:03:54 GMT -5
I sent you a PM, wondering how the project is coming ? ? Their profile says last on line Apr 1.
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